Move webCacheManager to //components.

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index 6383b23150c35de244dc7f9649f855a4521af515..ec138a80f35b85d8e9eb4b923f5cca15cbd2074e 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -95,6 +95,9 @@ group("all_components") {
     "//components/visitedlink/browser",
     "//components/visitedlink/common",
     "//components/visitedlink/renderer",
+    "//components/web_cache/browser",
+    "//components/web_cache/common",
+    "//components/web_cache/renderer",
     "//components/web_modal",
     "//components/webdata/common",
     "//components/wifi",
@@ -171,6 +174,8 @@ group("all_components") {
       "//components/visitedlink/browser",  # Blocked on content.
       "//components/visitedlink/common",  # Blocked on content.
       "//components/visitedlink/renderer",  # Blocked on blink
+      "//components/web_cache/browser",  # Blocked on content and blink.
+      "//components/web_cache/renderer",  # Blocked on content and blink.
       "//components/web_modal",  # Blocked on content.
     ]
   }