cc: Make tiling interest rect calc based on viewport.

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/gpu/render_widget_compositor.h"
 
 #include <limits>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 335 matching lines @@
     const int kMinSlowDownScaleFactor = 0;
     const int kMaxSlowDownScaleFactor = INT_MAX;
     GetSwitchValueAsInt(
         *cmd,
         cc::switches::kSlowDownRasterScaleFactor,
         kMinSlowDownScaleFactor,
         kMaxSlowDownScaleFactor,
         &settings.initial_debug_state.slow_down_raster_scale_factor);
   }
 
-  if (cmd->HasSwitch(cc::switches::kMaxTilesForInterestArea)) {
-    int max_tiles_for_interest_area;
+  if (cmd->HasSwitch(cc::switches::kTilingInterestAreaViewportMultiplier)) {
+    int tiling_interest_area_viewport_multiplier;
     if (GetSwitchValueAsInt(*cmd,
-                            cc::switches::kMaxTilesForInterestArea,
+                            cc::switches::kTilingInterestAreaViewportMultiplier,
                             1, std::numeric_limits<int>::max(),
-                            &max_tiles_for_interest_area))
-      settings.max_tiles_for_interest_area = max_tiles_for_interest_area;
+                            &tiling_interest_area_viewport_multiplier))
+      settings.tiling_interest_area_viewport_multiplier =
+          tiling_interest_area_viewport_multiplier;
   }
 
   if (cmd->HasSwitch(cc::switches::kMaxUnusedResourceMemoryUsagePercentage)) {
     int max_unused_resource_memory_percentage;
     if (GetSwitchValueAsInt(
             *cmd,
             cc::switches::kMaxUnusedResourceMemoryUsagePercentage,
             0, 100,
             &max_unused_resource_memory_percentage)) {
       settings.max_unused_resource_memory_percentage =
@@ skipping 563 matching lines @@
   cc::ContextProvider* provider =
       compositor_deps_->GetSharedMainThreadContextProvider();
   // provider can be NULL after the GPU process crashed enough times and we
   // don't want to restart it any more (falling back to software).
   if (!provider)
     return;
   provider->ContextGL()->RateLimitOffscreenContextCHROMIUM();
 }
 
 }  // namespace content