Remove unnecessary IndexedDB deps from content/common

content/common/DEPS

 include_rules = [
   "+media/audio",
   "+media/base",
   "-storage/browser",
   "-webkit/renderer",
 
   # No inclusion of WebKit from the browser, other than strictly enum/POD,
   # header-only types, and some selected common code.
   "-third_party/WebKit",
   "+third_party/WebKit/public/platform/WebBatteryStatus.h",
   "+third_party/WebKit/public/platform/WebCircularGeofencingRegion.h",
   "+third_party/WebKit/public/platform/WebCString.h",
   "+third_party/WebKit/public/platform/WebDeviceMotionData.h",
   "+third_party/WebKit/public/platform/WebDeviceOrientationData.h",
   "+third_party/WebKit/public/platform/WebFloatPoint.h",
   "+third_party/WebKit/public/platform/WebFloatRect.h",
   "+third_party/WebKit/public/platform/WebFocusType.h",
   "+third_party/WebKit/public/platform/WebGamepad.h",
   "+third_party/WebKit/public/platform/WebGamepads.h",
   "+third_party/WebKit/public/platform/WebGeofencingEventType.h",
   "+third_party/WebKit/public/platform/WebGraphicsContext3D.h",
   "+third_party/WebKit/public/platform/WebHTTPBody.h",
-  "+third_party/WebKit/public/platform/WebIDBCursor.h",
-  "+third_party/WebKit/public/platform/WebIDBDatabase.h",
   "+third_party/WebKit/public/platform/WebIDBTypes.h",
   "+third_party/WebKit/public/platform/WebLockOrientationError.h",
   "+third_party/WebKit/public/platform/WebPageVisibilityState.h",
   "+third_party/WebKit/public/platform/WebReferrerPolicy.h",
   "+third_party/WebKit/public/platform/WebScreenOrientationLockType.h",
   "+third_party/WebKit/public/platform/WebScreenOrientationType.h",
   "+third_party/WebKit/public/platform/WebScreenInfo.h",
   "+third_party/WebKit/public/platform/WebServiceWorkerError.h",
   "+third_party/WebKit/public/platform/WebServiceWorkerEventResult.h",
   "+third_party/WebKit/public/platform/WebServiceWorkerCacheError.h",
@@ skipping 20 matching lines @@
   "+third_party/WebKit/public/web/WebTextDirection.h",
   "+third_party/WebKit/public/web/WebWindowFeatures.h",
 ]
 
 specific_include_rules = {
 # Java bridge code passes NPAPI types to the browser process. Crazy!
   "java_bridge_messages\.h": [
     "+content/child"
   ]
 }