[content shell] Add support for layout tests using content_shell on Android (first step).

Added support for dumping pixel results, and signalling the server that we're
ready.

BUG=111316
TEST=none


Review URL: https://chromiumcodereview.appspot.com/10824351

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152202 0039d316-1c4b-4281-b951-d872f2087c98

content/shell/layout_test_controller.cc

@@ -5,6 +5,7 @@
 #include "content/shell/layout_test_controller.h"
 
 #include "base/md5.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/stringprintf.h"
 #include "content/public/renderer/render_view.h"
 #include "content/shell/shell_messages.h"
@@ -188,13 +189,29 @@ void LayoutTestController::OnCaptureImageDump(
 
   SkAutoLockPixels snapshot_lock(snapshot);
   base::MD5Digest digest;
+#if defined(OS_ANDROID)
+  // On Android, pixel layout is RGBA, however, other Chrome platforms use BGRA.
+  const uint8_t* raw_pixels =
+      reinterpret_cast<const uint8_t*>(snapshot.getPixels());
+  size_t snapshot_size = snapshot.getSize();
+  scoped_array<uint8_t> reordered_pixels(new uint8_t[snapshot_size]);
+  for (size_t i = 0; i < snapshot_size; i += 4) {
+    reordered_pixels[i] = raw_pixels[i + 2];
+    reordered_pixels[i + 1] = raw_pixels[i + 1];
+    reordered_pixels[i + 2] = raw_pixels[i];
+    reordered_pixels[i + 3] = raw_pixels[i + 3];
+  }
+  base::MD5Sum(reordered_pixels.get(), snapshot_size, &digest);
+#else
   base::MD5Sum(snapshot.getPixels(), snapshot.getSize(), &digest);
+#endif
   std::string actual_pixel_hash = base::MD5DigestToBase16(digest);
 
   if (actual_pixel_hash == expected_pixel_hash) {
     SkBitmap empty_image;
     Send(new ShellViewHostMsg_ImageDump(
         routing_id(), actual_pixel_hash, empty_image));
+    return;
   }
   Send(new ShellViewHostMsg_ImageDump(
       routing_id(), actual_pixel_hash, snapshot));

content/shell/layout_test_controller_host.cc

@@ -118,11 +118,6 @@ void LayoutTestControllerHost::OnTextDump(const std::string& dump) {
 void LayoutTestControllerHost::OnImageDump(
     const std::string& actual_pixel_hash,
     const SkBitmap& image) {
-#if !defined(OS_ANDROID)
-  // DumpRenderTree is not currently supported for Android. Also, on Android
-  // the required webkit_support methods are not defined, so this method just
-  // doesn't compile.
-
   SkAutoLockPixels image_lock(image);
 
   printf("\nActualHash: %s\n", actual_pixel_hash.c_str());
@@ -141,14 +136,27 @@ void LayoutTestControllerHost::OnImageDump(
     bool discard_transparency = true;
 #endif
 
-    if (webkit_support::EncodeBGRAPNGWithChecksum(
+    bool success = false;
+#if defined(OS_ANDROID)
+    success = webkit_support::EncodeRGBAPNGWithChecksum(
+        reinterpret_cast<const unsigned char*>(image.getPixels()),
+        image.width(),
+        image.height(),
+        static_cast<int>(image.rowBytes()),
+        discard_transparency,
+        actual_pixel_hash,
+        &png);
+#else
+    success = webkit_support::EncodeBGRAPNGWithChecksum(
         reinterpret_cast<const unsigned char*>(image.getPixels()),
         image.width(),
         image.height(),
         static_cast<int>(image.rowBytes()),
         discard_transparency,
         actual_pixel_hash,
-            &png)) {
+        &png);
+#endif
+    if (success) {
       printf("Content-Type: image/png\n");
       printf("Content-Length: %u\n", static_cast<unsigned>(png.size()));
       fwrite(&png[0], 1, png.size(), stdout);
@@ -156,7 +164,6 @@ void LayoutTestControllerHost::OnImageDump(
   }
 
   MessageLoop::current()->PostTask(FROM_HERE, MessageLoop::QuitClosure());
-#endif
 }
 
 void LayoutTestControllerHost::OnNotifyDone() {

content/shell/shell_browser_main.cc

@@ -20,12 +20,6 @@ namespace {
 
 GURL GetURLForLayoutTest(const char* test_name,
                          std::string* expected_pixel_hash) {
-#if defined(OS_ANDROID)
-  // DumpRenderTree is not currently supported for Android using the content
-  // shell.
-  NOTIMPLEMENTED();
-  return GURL::EmptyGURL();
-#else
   std::string path_or_url = test_name;
   std::string pixel_hash;
   std::string::size_type separator_position = path_or_url.find('\'');
@@ -42,7 +36,6 @@ GURL GetURLForLayoutTest(const char* test_name,
     webkit_support::SetCurrentDirectoryForFileURL(test_url);
   }
   return test_url;
-#endif
 }
 
 }  // namespace
@@ -71,6 +64,11 @@ int ShellBrowserMain(const content::MainFunctionParams& parameters) {
         static_cast<content::ShellContentBrowserClient*>(
             content::GetContentClient()->browser())->browser_context();
 
+#if defined(OS_ANDROID)
+    puts("#READY");
+    fflush(stdout);
+#endif
+
     while (fgets(test_string, sizeof(test_string), stdin)) {
       char *new_line_position = strchr(test_string, '\n');
       if (new_line_position)