Migrate HostZoomMap to live in StoragePartition.

content/browser/browser_context.cc

Index: content/browser/browser_context.cc
diff --git a/content/browser/browser_context.cc b/content/browser/browser_context.cc
index 8acae2d3668221667851988b7371d477bc7a7170..d37aa03dd22aad027c99f3eb59ef2358b5e14f2e 100644
--- a/content/browser/browser_context.cc
+++ b/content/browser/browser_context.cc
@@ -15,6 +15,7 @@
 #include "content/public/browser/blob_handle.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
+#include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/site_instance.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/cookies/cookie_store.h"
@@ -84,6 +85,13 @@ void SaveSessionStateOnIndexedDBThread(
   indexed_db_context->SetForceKeepSessionState();
 }
 
+void ChangeDefaultZoomForStoragePartition(
+    double level,
+    content::StoragePartition* partition) {
+  DCHECK(partition);

[awong, 2014/08/12 21:07:06]

IIRC, if you're just going to crash on the next line, we don't usually bother
with a DCHECK().

[wjmaclean, 2014/08/13 17:16:03]

Done.

+  partition->GetHostZoomMap()->SetDefaultZoomLevel(level);
+}
+
 }  // namespace
 
 // static
@@ -104,6 +112,13 @@ void BrowserContext::GarbageCollectStoragePartitions(
       active_paths.Pass(), done);
 }
 
+// static
+void BrowserContext::SetDefaultZoomLevel(BrowserContext* context,
+                                         double level) {
+  GetStoragePartitionMap(context)->ForEach(
+      base::Bind(ChangeDefaultZoomForStoragePartition, level));
+}
+
 DownloadManager* BrowserContext::GetDownloadManager(
     BrowserContext* context) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ -279,4 +294,12 @@ BrowserContext::~BrowserContext() {
 #endif
 }
 
+double BrowserContext::GetDefaultZoomLevel() const {
+  return 0;
+}
+
+ZoomLevelPrefsDelegate* BrowserContext::CreateZoomLevelPrefsDelegate() {
+  return NULL;
+}
+
 }  // namespace content