Revert of [devtools] Support different encodings for Page.CaptureScreenshot.

ui/snapshot/snapshot_android.cc

Index: ui/snapshot/snapshot_android.cc
diff --git a/ui/snapshot/snapshot_android.cc b/ui/snapshot/snapshot_android.cc
index 3de1f5ad8393824473d20287d1fc6c8d04f42042..f687aa21daf359ba68c44ed1e1943d416f872b36 100644
--- a/ui/snapshot/snapshot_android.cc
+++ b/ui/snapshot/snapshot_android.cc
@@ -24,14 +24,15 @@
 // Sync versions are not supported in Android.  Callers should fall back
 // to the async version.
 bool GrabViewSnapshot(gfx::NativeView view,
-                      const gfx::Rect& snapshot_bounds,
-                      gfx::Image* image) {
-  return GrabWindowSnapshot(view->GetWindowAndroid(), snapshot_bounds, image);
+                      std::vector<unsigned char>* png_representation,
+                      const gfx::Rect& snapshot_bounds) {
+  return GrabWindowSnapshot(
+      view->GetWindowAndroid(), png_representation, snapshot_bounds);
 }
 
 bool GrabWindowSnapshot(gfx::NativeWindow window,
-                        const gfx::Rect& snapshot_bounds,
-                        gfx::Image* image) {
+                        std::vector<unsigned char>* png_representation,
+                        const gfx::Rect& snapshot_bounds) {
   return false;
 }
 
@@ -63,20 +64,28 @@
                                   background_task_runner));
 }
 
-void GrabWindowSnapshotAsync(gfx::NativeWindow window,
-                             const gfx::Rect& source_rect,
-                             const GrabWindowSnapshotAsyncCallback& callback) {
-  MakeAsyncCopyRequest(
-      window, source_rect,
-      base::Bind(&SnapshotAsync::RunCallbackWithCopyOutputResult, callback));
+void GrabWindowSnapshotAsync(
+    gfx::NativeWindow window,
+    const gfx::Rect& source_rect,
+    scoped_refptr<base::TaskRunner> background_task_runner,
+    const GrabWindowSnapshotAsyncPNGCallback& callback) {
+  MakeAsyncCopyRequest(window,
+                       source_rect,
+                       base::Bind(&SnapshotAsync::EncodeCopyOutputResult,
+                                  callback,
+                                  background_task_runner));
 }
 
-void GrabViewSnapshotAsync(gfx::NativeView view,
-                           const gfx::Rect& source_rect,
-                           const GrabWindowSnapshotAsyncCallback& callback) {
-  MakeAsyncCopyRequest(
-      view->GetWindowAndroid(), source_rect,
-      base::Bind(&SnapshotAsync::RunCallbackWithCopyOutputResult, callback));
+void GrabViewSnapshotAsync(
+    gfx::NativeView view,
+    const gfx::Rect& source_rect,
+    scoped_refptr<base::TaskRunner> background_task_runner,
+    const GrabWindowSnapshotAsyncPNGCallback& callback) {
+  MakeAsyncCopyRequest(view->GetWindowAndroid(),
+                       source_rect,
+                       base::Bind(&SnapshotAsync::EncodeCopyOutputResult,
+                                  callback,
+                                  background_task_runner));
 }
 
 }  // namespace ui