[WebView] Fix issue with transparent background.

android_webview/browser/browser_view_renderer.cc

Index: android_webview/browser/browser_view_renderer.cc
diff --git a/android_webview/browser/browser_view_renderer.cc b/android_webview/browser/browser_view_renderer.cc
index c55577b414f590f6c8445910b1fd050371b292ab..f1ab1b940a74d6ccac278d910f90cecbe6d2b342 100644
--- a/android_webview/browser/browser_view_renderer.cc
+++ b/android_webview/browser/browser_view_renderer.cc
@@ -104,7 +104,6 @@ BrowserViewRenderer::BrowserViewRenderer(
       attached_to_window_(false),
       hardware_enabled_(false),
       dip_scale_(0.0),
-      has_transparent_background_(false),
       page_scale_factor_(1.0),
       on_new_picture_enable_(false),
       clear_view_(false),
@@ -255,7 +254,6 @@ bool BrowserViewRenderer::OnDrawHardware(jobject java_canvas) {
   draw_gl_input->scroll_offset = last_on_draw_scroll_offset_;
   draw_gl_input->width = width_;
   draw_gl_input->height = height_;
-  draw_gl_input->has_transparent_background = has_transparent_background_;
 
   gfx::Transform transform;
   gfx::Size surface_size(width_, height_);
@@ -477,10 +475,6 @@ void BrowserViewRenderer::SetDipScale(float dip_scale) {
   CHECK(dip_scale_ > 0);
 }
 
-void BrowserViewRenderer::SetHasTransparentBackground(bool transparent) {
-  has_transparent_background_ = transparent;
-}
-
 gfx::Vector2d BrowserViewRenderer::max_scroll_offset() const {
   DCHECK_GT(dip_scale_, 0);
   return gfx::ToCeiledVector2d(gfx::ScaleVector2d(
@@ -731,8 +725,6 @@ std::string BrowserViewRenderer::ToString(AwDrawGLInfo* draw_info) const {
   base::StringAppendF(&str, "view_visible: %d ", view_visible_);
   base::StringAppendF(&str, "window_visible: %d ", window_visible_);
   base::StringAppendF(&str, "dip_scale: %f ", dip_scale_);
-  base::StringAppendF(&str, "has_transparent_background_: %d",
-                      has_transparent_background_);
   base::StringAppendF(&str, "page_scale_factor: %f ", page_scale_factor_);
   base::StringAppendF(&str,
                       "compositor_needs_continuous_invalidate: %d ",