Remove usages of WebContents::GetRenderViewHost().

This CL was uploaded by git cl split.

R=caseq@chromium.org

Bug: 1142671
Change-Id: I2a5d18034d8ec6279ba8330d54e2f093b45fbb64
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2500607
Auto-Submit: Lucas Gadani <lfg@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821090}

chrome/browser/devtools/devtools_eye_dropper.cc

@@ -40,7 +40,8 @@ DevToolsEyeDropper::DevToolsEyeDropper(content::WebContents* web_contents,
       host_(nullptr) {
   mouse_event_callback_ =
       base::Bind(&DevToolsEyeDropper::HandleMouseEvent, base::Unretained(this));
-  content::RenderViewHost* rvh = web_contents->GetRenderViewHost();
+  content::RenderViewHost* rvh =
+      web_contents->GetMainFrame()->GetRenderViewHost();
   if (rvh)
     AttachToHost(rvh->GetWidget());
 }

chrome/browser/devtools/devtools_file_helper.cc

@@ -155,7 +155,8 @@ std::string RegisterFileSystem(WebContents* web_contents,
 
   content::ChildProcessSecurityPolicy* policy =
       content::ChildProcessSecurityPolicy::GetInstance();
-  RenderViewHost* render_view_host = web_contents->GetRenderViewHost();
+  RenderViewHost* render_view_host =
+      web_contents->GetMainFrame()->GetRenderViewHost();
   int renderer_id = render_view_host->GetProcess()->GetID();
   policy->GrantReadFileSystem(renderer_id, file_system.id());
   policy->GrantWriteFileSystem(renderer_id, file_system.id());

chrome/browser/devtools/devtools_window.cc

@@ -1425,7 +1425,7 @@ void DevToolsWindow::OpenInNewTab(const std::string& url) {
   int child_id = content::ChildProcessHost::kInvalidUniqueID;
   if (inspected_web_contents) {
     content::RenderViewHost* render_view_host =
-        inspected_web_contents->GetRenderViewHost();
+        inspected_web_contents->GetMainFrame()->GetRenderViewHost();
     if (render_view_host)
       child_id = render_view_host->GetProcess()->GetID();
   }