[chromecast] Handle WebSQL database and mixer audio via CastWebContents

- Adds a CastWebContents::FromWebContents() method to retrieve
corresponding CastWebContents that wrapped the content::CastWebContents.
- Adds flags into CastWebContents::InitParams to determine whether
enabling WebSQL database and mixer audio.

Merge-With: eureka-internal/342751

Bug: internal b/144316145
Test: CQ
Change-Id: I7768e9b2d903ea79dbb3e49ca82ffe389f98d19e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1954447Reviewed-by: Sean Topping <seantopping@chromium.org>
Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Commit-Queue: Jiawei Li <lijiawei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#722614}

chromecast/browser/cast_content_browser_client.cc

@@ -39,6 +39,7 @@
 #include "chromecast/browser/cast_overlay_manifests.h"
 #include "chromecast/browser/cast_quota_permission_context.h"
 #include "chromecast/browser/cast_session_id_map.h"
+#include "chromecast/browser/cast_web_contents.h"
 #include "chromecast/browser/default_navigation_throttle.h"
 #include "chromecast/browser/devtools/cast_devtools_manager_delegate.h"
 #include "chromecast/browser/general_audience_browsing_navigation_throttle.h"
@@ -107,12 +108,12 @@
 #endif  // defined(USE_ALSA)
 
 #if BUILDFLAG(ENABLE_CHROMECAST_EXTENSIONS)
-#include "chromecast/browser/cast_extension_message_filter.h"  // nogncheck
+#include "chromecast/browser/cast_extension_message_filter.h"      // nogncheck
 #include "chromecast/browser/cast_extension_url_loader_factory.h"  // nogncheck
-#include "extensions/browser/extension_message_filter.h"  // nogncheck
-#include "extensions/browser/extension_protocols.h"       // nogncheck
-#include "extensions/browser/extension_registry.h"        // nogncheck
-#include "extensions/browser/extension_system.h"          // nogncheck
+#include "extensions/browser/extension_message_filter.h"           // nogncheck
+#include "extensions/browser/extension_protocols.h"                // nogncheck
+#include "extensions/browser/extension_registry.h"                 // nogncheck
+#include "extensions/browser/extension_system.h"                   // nogncheck
 #include "extensions/browser/guest_view/extensions_guest_view_message_filter.h"  // nogncheck
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"  // nogncheck
 #include "extensions/browser/info_map.h"                            // nogncheck
@@ -444,15 +445,16 @@ void CastContentBrowserClient::AppendExtraCommandLineSwitches(
     }
   } else if (process_type == switches::kGpuProcess) {
 #if defined(OS_LINUX)
-  // Necessary for accelerated 2d canvas.  By default on Linux, Chromium assumes
-  // GLES2 contexts can be lost to a power-save mode, which breaks GPU canvas
-  // apps.
+    // Necessary for accelerated 2d canvas.  By default on Linux, Chromium
+    // assumes GLES2 contexts can be lost to a power-save mode, which breaks GPU
+    // canvas apps.
     command_line->AppendSwitch(switches::kGpuNoContextLost);
 #endif
 
 #if defined(USE_AURA)
     static const char* const kForwardSwitches[] = {
-        switches::kCastInitialScreenHeight, switches::kCastInitialScreenWidth,
+        switches::kCastInitialScreenHeight,
+        switches::kCastInitialScreenWidth,
         switches::kVSyncInterval,
     };
     command_line->CopySwitchesFrom(*browser_command_line, kForwardSwitches,
@@ -516,6 +518,18 @@ void CastContentBrowserClient::OverrideWebkitPrefs(
   DCHECK(prefs->viewport_meta_enabled);
   prefs->viewport_style = content::ViewportStyle::TELEVISION;
 #endif  // defined(OS_ANDROID)
+
+  // Disable WebSQL databases by default.
+  prefs->databases_enabled = false;
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderViewHost(render_view_host);
+  if (web_contents) {
+    chromecast::CastWebContents* cast_web_contents =
+        chromecast::CastWebContents::FromWebContents(web_contents);
+    if (cast_web_contents && cast_web_contents->is_websql_enabled()) {
+      prefs->databases_enabled = true;
+    }
+  }
 }
 
 std::string CastContentBrowserClient::GetApplicationLocale() {
@@ -644,8 +658,16 @@ void CastContentBrowserClient::GetApplicationMediaInfo(
     std::string* application_session_id,
     bool* mixer_audio_enabled,
     content::RenderFrameHost* render_frame_host) {
-  *application_session_id = "";
-  *mixer_audio_enabled = true;
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderFrameHost(render_frame_host);
+  if (web_contents) {
+    *application_session_id =
+        CastNavigationUIData::GetSessionIdForWebContents(web_contents);
+    chromecast::CastWebContents* cast_web_contents =
+        chromecast::CastWebContents::FromWebContents(web_contents);
+    *mixer_audio_enabled =
+        (cast_web_contents && cast_web_contents->is_mixer_audio_enabled());
+  }
 }
 
 base::Optional<service_manager::Manifest>

chromecast/browser/cast_content_browser_client.h

@@ -275,11 +275,9 @@ class CastContentBrowserClient
   void BindMediaRenderer(
       mojo::PendingReceiver<::media::mojom::Renderer> receiver);
 
-  // Internal implementation overwrites this function to inject real values.
-  virtual void GetApplicationMediaInfo(
-      std::string* application_session_id,
-      bool* mixer_audio_enabled,
-      content::RenderFrameHost* render_frame_host);
+  void GetApplicationMediaInfo(std::string* application_session_id,
+                               bool* mixer_audio_enabled,
+                               content::RenderFrameHost* render_frame_host);
 
  private:
   // Create device cert/key

chromecast/browser/cast_web_contents.h

@@ -188,7 +188,7 @@ class CastWebContents {
     // is destroyed before CastWebContents, the WeakPtr will be invalidated on
     // the main UI thread.
     base::WeakPtr<Delegate> delegate = nullptr;
-    // Enable development mode for this CastWebCastWebContents. Whitelists
+    // Enable development mode for this CastWebContents. Whitelists
     // certain functionality for the WebContents, like remote debugging and
     // debugging interfaces.
     bool enabled_for_dev = false;
@@ -206,6 +206,10 @@ class CastWebContents {
     // Background color for the WebContents view. If not provided, the color
     // will fall back to the platform default.
     BackgroundColor background_color = BackgroundColor::NONE;
+    // Enable WebSQL database for this CastWebContents.
+    bool enable_websql = false;
+    // Enable mixer audio support for this CastWebContents.
+    bool enable_mixer_audio = false;
 
     InitParams();
     InitParams(const InitParams& other);
@@ -224,6 +228,10 @@ class CastWebContents {
 
   static std::vector<CastWebContents*>& GetAll();
 
+  // Returns the CastWebContents that wraps the content::WebContents, or nullptr
+  // if the CastWebContents does not exist.
+  static CastWebContents* FromWebContents(content::WebContents* web_contents);
+
   CastWebContents() = default;
   virtual ~CastWebContents() = default;
 
@@ -341,6 +349,13 @@ class CastWebContents {
       const InterfaceSet& interface_set,
       service_manager::InterfaceProvider* interface_provider) = 0;
 
+  // Returns true if WebSQL database is configured enabled for this
+  // CastWebContents.
+  virtual bool is_websql_enabled() = 0;
+
+  // Returns true if mixer audio is enabled.
+  virtual bool is_mixer_audio_enabled() = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(CastWebContents);
 };

chromecast/browser/cast_web_contents_impl.cc

@@ -84,6 +84,21 @@ std::vector<CastWebContents*>& CastWebContents::GetAll() {
   return *instance;
 }
 
+// static
+CastWebContents* CastWebContents::FromWebContents(
+    content::WebContents* web_contents) {
+  auto& all_cast_web_contents = CastWebContents::GetAll();
+  auto it =
+      std::find_if(all_cast_web_contents.begin(), all_cast_web_contents.end(),
+                   [&web_contents](const auto* cast_web_contents) {
+                     return cast_web_contents->web_contents() == web_contents;
+                   });
+  if (it == all_cast_web_contents.end()) {
+    return nullptr;
+  }
+  return *it;
+}
+
 CastWebContentsImpl::CastWebContentsImpl(content::WebContents* web_contents,
                                          const InitParams& init_params)
     : web_contents_(web_contents),
@@ -100,6 +115,8 @@ CastWebContentsImpl::CastWebContentsImpl(content::WebContents* web_contents,
                          ? std::make_unique<CastMediaBlocker>(web_contents_)
                          : nullptr),
       tab_id_(init_params.is_root_window ? 0 : next_tab_id++),
+      is_websql_enabled_(init_params.enable_websql),
+      is_mixer_audio_enabled_(init_params.enable_mixer_audio),
       main_frame_loaded_(false),
       closing_(false),
       stopped_(false),
@@ -335,6 +352,14 @@ void CastWebContentsImpl::RegisterInterfaceProvider(
   interface_providers_map_.emplace(interface_set, interface_provider);
 }
 
+bool CastWebContentsImpl::is_websql_enabled() {
+  return is_websql_enabled_;
+}
+
+bool CastWebContentsImpl::is_mixer_audio_enabled() {
+  return is_mixer_audio_enabled_;
+}
+
 void CastWebContentsImpl::OnClosePageTimeout() {
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   if (!closing_ || stopped_) {

chromecast/browser/cast_web_contents_impl.h

@@ -68,6 +68,8 @@ class CastWebContentsImpl : public CastWebContents,
       std::vector<mojo::ScopedMessagePipeHandle> channels) override;
   void AddObserver(Observer* observer) override;
   void RemoveObserver(Observer* observer) override;
+  bool is_websql_enabled() override;
+  bool is_mixer_audio_enabled() override;
 
   // content::WebContentsObserver implementation:
   void RenderFrameCreated(content::RenderFrameHost* render_frame_host) override;
@@ -152,6 +154,8 @@ class CastWebContentsImpl : public CastWebContents,
   std::vector<RendererFeature> renderer_features_;
 
   const int tab_id_;
+  bool is_websql_enabled_;
+  bool is_mixer_audio_enabled_;
   base::TimeTicks start_loading_ticks_;
   bool main_frame_loaded_;
   bool closing_;